Get options data for a stock.
AI agents call get_options_data to retrieve information from Yahoo Finance MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves options market data (pricing, Greeks, volume, etc.) for analysis purposes. It does not execute trades, modify positions, commit financial obligations, or make irreversible changes. While the broader server context involves financial data, this specific tool is a passive read operation on publicly available or account-accessible options information. No funds are moved and no orders are placed.
From the tool's definition Tool name 'get_options_data' and description 'Get options data for a stock' indicate a retrieval operation. The verb 'Get' and the read-only nature of querying financial data confirm this is a data retrieval function with no side effects.
Attacks that exploit this kind of access
Get options data for a stock. It is categorised as a Read tool in the Yahoo Finance MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Yahoo Finance MCP Server MCP server in PolicyLayer and add a rule for get_options_data: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Yahoo Finance MCP Server. Nothing to install.
get_options_data is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_options_data rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_options_data. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_options_data is provided by the Yahoo Finance MCP Server MCP server (leo-ye0/mcp-finance-data). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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